Hi !
Right, L2400 /C2400 both are just a filter for signal mentioned by Minho (TIGRIS_TO_BATTERY_SWI).
Via this data line phones mobo gets status of the battery (from battery controller).
To solve you problem there are no need to buy that components, and to solder them to their places - it's just necessary to connect contact places of L2400 with thin wire (for example [http://elwo.ru/foto22/remont_naushnikov_stereo-13.jpg|coil of the little headphones]).
That's all .
In such way you will repair data line (middle (data) connection of battery controller to a phone), which is broken by L2400.
Don't think about capacitor C2400 )), it's not necessary to place it. Phone will work (meen charging) without it .
And of course microsoldering, microscope, fluxe, wire and desire :)